Pump or sprayer for horticultural purposes



March 12, 1929. w GRMLEY I 1,705,401

PUMP 0R SPRAYER FOR HORVTICULTURAL PURPOSES Filed Nov. l1, 1927 which have been vPatented Mer. l2, i929. i

'WILLIAM CTBIMLEY, or sianriwromhuennivn.

rui/iron SPRAYERFOR HORTICULTURAL rigurosas. r

f ilpplicationled November 11, 1927, Serial No.

i f end of the inner pump cylinderandthe liquid 'being drawn into the pump cylinder through the yvalve chamber, and on lthe return stro e i being pumped from the pump cylinder 10 througha valve in the valve chamber to 'the outer chamber, from .whence it is discharged.

A y. This kind of pumpl or spi'ayer hitherto, been used only as a hand sprayer, i. e.; the' apparatus has been relatively small andv has 'y y 15' been adapted to be held in the left hand'while the pistonrod hasbeen reciprocated by the right hand, Vthe sprayer being commonly used either in asubstantially horizontal "position or with'its delivery end pointing upwards. y

The present invention has for its primary Object toV construct' a pump having the features referred to but comprising certain iin'- provements f'whi'ch permitf the liquid being discharged at a greater pressure ythan hitherto and, further,. which]is so constructed that in use itis'held in a verticalposi'tion by provid-' Hsteadied and is operated preferably by both hands. *Ina pump working upon the principles l z pump is originally Vfull 0f aii" thisair is pumped Vinto the vouter Vchamber 'and coinpressedzto Va relativly high pressure so that fthe'liquidfwhich is subsequently pumped into the outer `c hani'beris subject to this pressure. One ofthe advantages, obtained'by Vmy imf proved construction is that compressed air is alwaysretainedin the', Outer chamber and is prevented fromfescaping therefrom Y owingfmainly ltoi the p'ositi'oiir lin which the pump is'falwaysused. Y'

One of th tion yis to provide adelivery compartment at the lower end of the outer chamber, this comfpartment beingformed by a transverse par- )tition lextending across `theouter chamber,

Cil

i this partitionl carrying a tube 'which'V extends g f upwardly within the outer chamber and has anopening at or near its upper i discharge passage'or. tubeproj ecting laterally therefrom.l ;1 v

With this arrangement the liquid can enter ing it with aV foot piece'whereby it may be 'f f Figure 2 is asectional described, assuming that the operation by two han lThe upper end of theoutery ohamber-lg'isf l Vclosed by a cap havingva small tube- 8 proay l tected`byaapj9, the arrangement beingsueh that air can enter or pass out through the tube i 8 but the entrance of'dirt Yisprevented by the' features of the present inven?V end While the delivery compartment is provided with a the delive'ryjjLcdoV I'JartmentA only. by p assing.

232,694, and inA Great Britain Marchyilgv.,

through .theftube carried by thepartition, and above the end of this tube I prefer to provide atransverse baffle extendingl partly across the L outer chamber. l The construction enables a local pressure to be generated inthe delivery chamber which is higher than the avelig'e-pressurein theouter 1 f chamber so that animproved dischargeis (jbtained. 1 y 1 If required, thedelivery compartment may tlielower end of the `outer chamber, the partition which has been referredto lbeing held between a i shoulderk in this cap and the lower edge of the'outer chamber;

is to-provide the lower end of the apparatus .7 07 A fui-'ther feature'of the present invention with a footpiece-which. may bein any Conv venient form, and which; may be provided with screwgholesso thatgit can readily -be screwedto a v shortlengthof Vwood'upon which Referring tothe drawingsif- Figure l is aperspective View showing one, form of-my invention.;

view thereof,l a

theloperator can stand lto holdH the punlpl steady while pumping Withboth hands.

ureQ.. i In the construction'illustratedftheaPPa-E;

ing apiston 3 Vand piston rod 4 whiehpasses I througliga suitable.stuffing-box -'andisjp'rovided with a transvere handlefsuitable for The ann ljar between-the rel Zand vthe outer nchamberl is closed by flange or plate l0 so that the air which enters or leaves the tube 8 communicates onlyjwith the pump barrel 2 and not with thefouterj' l chamber 1.

,The forward end Closed by aV '3a'pf1l-fandy upon the exterior. of the vouter 'chamber lisa valve chambergl f `having a reinovable return valve' 14;

Within thevalve vrchamber isacageflev *i taining a'second non-return valve 41 6.` l s cap lcontaining'anone.

65- bey formed by means of acap screwingonto,y Y

Vward end of the `'chamber l2.

Gratings or cross bars 31 are provided for retaining the valves ltand 16 in their pockets from which theymight otherwise fall out.y

A tubular passage 17 extends from the forpump barrell 2 to the valve At itslower end the outer chamber 1 is closed by a partition -18 which is held between a shoulder 19 on a cap 20land the end ofthe outer' chamber 1.

' AAt'its centre the partition 18 is .provided f ,with a tube 21 which extends upwardly and hasV a transversek branch 22 whichl is open at the end. v r l Upon the top' of the branch 22 is fixed a Y baiiie plate 23Yof part circular form as shown clearly in Figure 3, this baffle plate extending only partly across the outer chamber.VV

In the side of the cap v2O is a delivery tube' 24' extending transversely and preferably in an upwardly inclined direction as shown.` Y 'i The lower'end ofthe cap 2() is provided with a lspigot 25 which extends through a portion26 of a stirrup like foot member 27, a

. nut28 securing'the foot'member or bracket to the cap 20. f

' The foot member 'or bracket 27 is provided with foot pieces 29 which/.have screw holes 30 by whichk they may be screwed to a short Y piece of wood or other suitable material In operation, 'before starting the outer chamber l is full lof air and upon the piston 3 f' being' reciprocated liquid is 'drawn'in past thek valve 14 through the tube 17 into the pump cylinder 2.

Upon the return stroke. this liquidis forced again through the tube 17 Vand into the 'valve chamber 12, from whence-it passes pasti the Avalve 16k into the outer chamber 1. No deliverytakes place thrOugh'the-tube 211, however,

' until '1 there is sufficient vliquid vin the outer chamberv 1 toreach the open end fof the tubev22, .7. f .The pumping ofliquid into the outer chainber 1 causes the air which was there originally to be compressed. vThis compressed air becomesimp'risoned atthe upper part of; the @outer chamber 1 vand since Vthe pump is al- ,y I uid'to saidbarrel from an ways'used in theposition,shownin thefdraw- ,515

ing, this fair chamber. Y

With the apparatus shown it is possibleto generate a very considerable pressure so that if pumping'ceases, delivery of the liquid from never escapes from theouter the passage 24 will continue' for accnsiderable time'until the air contained in c c c Y the outer chamber l: has lost its pressure.

What I claim then is z* LA pump 'having in combination anouter casingformin'g'a. pressure chamber., 'a' pump l brarrelwithin said casing, a reciprocal piston and piston rod within said barrel, valve controlledv means controlling the passage lof liqjacent externalv source of supply and the passage of said liquid from the barrel to saidl pressure chamber, a cap y mounted. onone end of said outer casing, a

supply and the passageof said liquid from the barrel to said pressure chamber, a cap mounted on one end'of said outer casing,

and projecting therefrom, a stirrup like foot a; Y j screw threaded spigot integralwith saidA cap 85 piece vhaving a short hollow boss through which said spigot is adaptedto pass, and

a nut Vadapted to screw onto saidk spigot 'and clamp itself.

the said boss between'the said cap and" "y l A 3. A pump having incombiiiation an o'uteriV casing vforming` a. pressure barrel within said casing, having a aiige adapted to chamber a'y pump an. annular plate' c fit over o'iie'endoit said outer casing and another flange of smalL er diameter adapted to befitted on to one endof said pump barreland said' plateA being adapted to close the adjacent end ofthe said pressure chamber, a further 'screwfthreaded' Y flange on said annular plate, an yinternallyi screwed cap adapted toY screw onl to saidI screwed flange, a reciprocal piston and piston rod within said barrel, said piston rodbeing adapted to screwed cap, valve controlled means controlling' the passage of liquid to said'barrel from kan external source of supplyand.thelpassage pass through said" "internally ,Y

of said liquid from the barrel to said pressure v chamber, acapy mounted on'oiie Aend'of .said f outer casing, a partition within said chamber and disposedjbetween said cap'aiid the adu n chamber is formed within said chamber and cap, said delivery chamber lhaving .inlet and vdischarge openings for the liquid, a screw end ofk sfaidoutercasingand at a dist-p` ltance from the former whereby ay delivery threaded spigot integral with said cap -and-l projecting therefrom, a stirrup like foot piece` havinga short hollowfbossthrough iwhich l a nut adapted i to screwl onto said spigot and clamptliesaid f 'i boss between the said' cap'and itself,"and. said,A

.said `'spigot is adapted to pass,

foot piece Vhavingprojecting` portions pro-' y vided wi-t-h screw holes whereby-it may bese-fl .cured'to asupport. c p i' e In witness whereof I aiixmy signature.

- `W1LniiiiigeitiMliiEgg 

